Transparent composite material and a production method therefor

ABSTRACT

This specification relates to a colorless composite material capable of retaining transparency within a wide temperature range by impregnating glass composition (glass fibers) with inorganic-organic hybrid resin. A colorless composite material according to exemplary embodiments includes glass fibers, and inorganic-organic hybrid resin consisting of inorganic bonds and organic bonds, wherein the inorganic bonds are Si—O—Si bonds or Si—O-M bonds and M denotes a metallic element.

TECHNICAL FIELD

The present disclosure relates to a colorless composite material and amethod for manufacturing the same.

BACKGROUND ART

In general, glass or plastic is used as a transparent material. However,the glass is fragile and the plastic is weak to a strong impact orforce. This is leading to development of colorless composite materials.The related art colorless composite material is manufactured byimpregnating glass fibers with typical transparent resin. However, theglass fiber and the typical transparent resin exhibit a great differencein, a refractive index variation according to the change of temperature.This may cause an optical transmittance variation according to thechange of temperature.

DISCLOSURE OF THE INVENTION

Therefore, an aspect of the detailed description is to provide acolorless composite material capable of retaining transparency within awide temperature range by way of impregnating organic composition (glassfibers) with inorganic-organic hybrid resin, and a manufacturing methodthereof.

To achieve these and other advantages and in accordance with the purposeof the present invention, as embodied and broadly described herein,there is provided a colorless composite material including glass fibers,and inorganic-organic hybrid resin consisting of inorganic bonds andorganic bonds. The inorganic bonds may be Si—O—Si bonds or Si—O-M bonds,and M may denote a metallic element including silicon.

In accordance with one exemplary embodiment of the present disclosure,the Si—O—Si bonds may be in a ratio of 30% to 60% by weight.

In accordance with one exemplary embodiment of the present disclosure, athermo-optic coefficient of the inorganic-organic hybrid resin may be−5×10⁻⁵/° C.˜+10⁻⁵/° C.

In accordance with one exemplary embodiment of the present disclosure,the Si—O-M bonds may be in a ratio of 2% to 20% by weight.

In accordance with one exemplary embodiment of the present disclosure,the metallic element may be one of Ti, Zr and Al.

In accordance with one exemplary embodiment of the present disclosure,the Si—O-M bond may be one of Si—O—Ti, Si—O—Zr and Si—O—Al bonds.

In accordance with one exemplary embodiment of the present disclosure,the Si—O-M bond may be the Si—O—Ti bond, and the Ti may be in a ratio of2% to 20% by weight.

In accordance with one exemplary embodiment of the present disclosure,the Si—O-M bond may be the Si—O—Zr bond and the Zr may be in a ratio of2% to 8% by weight.

In accordance with one exemplary embodiment of the present disclosure,the Si—O-M bond may be the Si—O—Al bond and the Al may be in a ratio of2% to 10% by weight.

A colorless composite material according to exemplary embodiments of thepresent disclosure may include glass fibers, and inorganic-organichybrid resin consisting of inorganic bonds and organic bonds. Here, theinorganic bonds may be M-O-M bonds and M may denote a metallic element.

A colorless composite material according to exemplary embodiments of thepresent disclosure may include glass fibers, and inorganic-organichybrid resin consisting of inorganic bonds and organic bonds. Here, theinorganic bonds may be one of Si—O—Ti, Si—O—Zr and Si—O—Al bonds and athermo-optic coefficient of the inorganic-organic hybrid resin may be−5×10⁻⁵/° C.˜+10⁻⁵/° C.

To achieve these and other advantages and in accordance with the purposeof the present invention, as embodied and broadly described herein,there is provided a method for manufacturing a colorless compositematerial, the method including, manufacturing inorganic-organic hybridresin consisting of inorganic bonds and organic bonds, impregnating theglass fibers with the inorganic-organic hybrid resin, and manufacturinga colorless composite material by performing heat curing or UV curingfor the impregnated materials. Here, the inorganic bonds may be Si—O—Sibonds or Si—O-M bonds and M may denote a metallic element.

Advantageous Effect

In accordance with the detailed description of a colorless compositematerial and a manufacturing method thereof, transparency of thecolorless composite material (or a transparent substrate) may beretained within a wide temperature range by way of adjusting a ratio ofinorganic bonds (Si—O—Si bonds) within inorganic-organic hybrid resincontained in the colorless composite material.

In accordance with the detailed description of a colorless compositematerial and a manufacturing method thereof, transparency of thecolorless composite material (or a transparent substrate) may beretained within a wide temperature range by way of adding a metallicelement to inorganic bonds (Si—O-M or M-O-M bonds) withininorganic-organic hybrid resin contained in the colorless compositematerial.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a flowchart illustrating a method for manufacturing acolorless composite material in accordance with a first exemplaryembodiment;

FIG. 2 is a view illustrating experimental results in accordance withexemplary embodiments; and

FIG. 3 is a flowchart showing a method for manufacturing a colorlesscomposite material in accordance with a second exemplary embodiment.

MODES FOR CARRYING OUT THE PREFERRED EMBODIMENTS

It should be noted that technological terms used herein are merely usedto describe a specific embodiment, but not to limit the presentinvention. Also, unless particularly defined otherwise, technologicalterms used herein should be construed as a meaning that is generallyunderstood by those having ordinary skill in the art to which theinvention pertains, and should not be construed too broadly or toonarrowly. Furthermore, if technological terms used herein are wrongterms unable to correctly express the spirit of the invention, then theyshould be replaced by technological terms that are properly understoodby those skilled in the art. In addition, general terms used in thisinvention should be construed based on the definition of dictionary, orthe context, and should not be construed too broadly or too narrowly.

Incidentally, unless clearly used otherwise, expressions in the singularnumber include a plural meaning. In this application, the terms“comprising” and “including” should not be construed to necessarilyinclude all of the elements or steps disclosed herein, and should beconstrued not to include some of the elements or steps thereof, orshould be construed to further include additional elements or steps.

Furthermore, the terms including an ordinal number such as first,second, etc. can be used to describe various elements, but the elementsshould not be limited by those terms. The terms are used merely for thepurpose to distinguish an element from the other element. For example, afirst element may be named to a second element, and similarly, a secondelement may be named to a first element without departing from the scopeof right of the invention.

Hereinafter, preferred embodiments of the present invention will bedescribed in detail with reference to the accompanying drawings, and thesame or similar elements are designated with the same numeral referencesregardless of the numerals in the drawings and their redundantdescription will be omitted.

In describing the present invention, moreover, the detailed descriptionwill be omitted when a specific description for publicly knowntechnologies to which the invention pertains is judged to obscure thegist of the present invention. Also, it should be noted that theaccompanying drawings are merely illustrated to easily explain thespirit of the invention, and therefore, they should not be construed tolimit the spirit of the invention by the accompanying drawings.

Hereinafter, description will be given of a colorless composite materialin accordance with a first exemplary embodiment with reference to FIGS.1 and 2. A colorless composite material in accordance with exemplaryembodiments of the present disclosure may be applied to various types ofdisplay panels, such as display panels for organic light emitting diodes(OLEDs) as well as liquid crystal displays (LCDs), plasma display panels(PDPs), display panels for field emitting displays (FEDs) and the like.Also, the colorless composite material according to the exemplaryembodiments may be used as a substituent material for flexiblesubstrates, optical substrates (for example, solar cell, etc.) and glasssubstrate.

In general, a colorless material may be manufactured by impregnatingglass fibers (glass) with typical resin having the same refractive indexas the glass fibers. However, although the glass fibers and the resinseem to be transparent owing to having the same refractive index at roomtemperature, transparency of the colorless material is drasticallylowered as the temperature changes. This arises from a thermoopticeffect that the refractive indexes of the glass fiber and the resin arevaried in response to the temperature change.

The thermooptic effect is represented by a thermooptic coefficient(dn/dT) as the refractive index variation according to temperature. Theglass fiber as an inorganic material and the resin as an organicmaterial are materials exhibiting a great difference in thermoopticcoefficient. The thermooptic coefficient of the glass fiber isapproximately +10⁻⁵/° C. and the thermooptic coefficient of the resin asthe organic material is approximately −10⁻⁴/° C. That is, with anincrease in temperature, the refractive index of the inorganic glassfiber increases but that of the organic resin decreases. The organicmaterial generally exhibits the greater variation of the refractiveindex over 10 times than the inorganic material. A drastic change intransparency and haze of the colorless material may be caused inresponse to the temperature change. For example, a colorless materialwhich retains its transparency at temperature of 25° C. may becomeopaque due to the thermooptic effect at temperature of 80° C.

Hereinafter, description will be given in detail of a colorlesscomposite material (or a transparent substrate) capable of retaining itstransparency within a wide temperature range by adjusting a thermoopticcoefficient of resin. Glass fibers used in the colorless compositematerial may be difficult to easily change compositions in considerationof fibrosis, knittability and the like, and also does not exhibit agreat change in the thermooptic coefficient by the variation of thecomposition. Therefore, it may be better to adjust the thermoopticcoefficient of the resin.

The exemplary embodiments of the present disclosure employinorganic-organic hybrid materials as resin materials contained in thecolorless composite material. The inorganic-organic hybrid materials maybe manufactured by a sol-gel method including a hydrolysis process and acondensation reaction, by reacting organic hallogensilane with siliconalkoxide or alkylether, or by a non-hydrolytic reaction without usingwater.

The inorganic-organic hybrid materials may be manufactured by usingmetallic compounds, which may be expressed by one of General Formulas 1to 3, as a starting material.

(OR¹)_(n)M-R² _(m)(n+m=4)  [General Formula 1]

(OR¹)_(n)M-(X—R³)_(m) (n+m=4)  [General Formula 2]

R⁴MCl₃  [General Formula 3]

In General Formulas 1 to 3, M denotes a metallic element containingsilicon (Si), R¹˜R⁴ denote organic materials. R¹ denotes a straightchain alkyl group or a side chain alkyl group such as methyl, ethyl,propyl, butyl and the like each having 1 to 10 carbon atoms, or hydrogenatoms obtained from the group by hydrolysis. R² denotes a straight chainor side chain alkyl group, phenyl group, phenyl alkoxyl group or aminegroup. Also, n denotes a natural number in the range of 1 to 4 and mdenotes an integer in the range of 0 to 3.

X denotes a carbon chain with 3 to 6 carbon atoms, R³ denotes a material(hereinafter, referred to as fluorocarbon) containing a vinyl group,glycydoxy group and methacryl group or a material that fluoride atomssubstitutes for carbon atoms on a carbon chain having 4 to 8 carbonatoms.

R⁴ denotes fluorocarbon, which contains a straight chain or side chainalkyl group having 1 to 10 carbon atoms or hydrogen atoms, phenyl group,phenyl alkoxyl group, amine group, vinyl group, glycydoxy group ormethacryl group, or fluorocarbon in which fluoride atoms substitute forcarbon atoms on a carbon chain having 4 to 8 carbon atoms.

Examples of compounds belonging to General Formulas 1 to 3, in detail,may include tetramethoxysilane, tetraethoxysilane, tetrapropoxysilane,tetrabutoxysilane, vinyltriethoxysilane, vinyltrimethoxysilane,vinyltripropoxysilane, vinyltriacetoxysilane,vinyldimethoxyethoxysilane, aminoprophyltriethoxysilane,aminoprophyltrimethoxysilane, aminoprophyltripropoxysilane,N-(3-acryloxy-2-hydroxyprophyl)-3-aminoprophyltriethoxysilane,N-(3-acryloxy-2-hydroxyprophyl)-3-aminoprophyltrimethoxysilane,3-acryloxyprophyldimethoxysilane, 3-acryloxyprophyldiethoxysilane,3-acryloxyprophyldipropoxysilane,3-(meth)acryloxyprophyltrimethoxysilane,3-(meth)acryloxyprophyltriethoxysilane,3-(meth)acryloxyprophyltripropoxysilane,N-(2-aminoethyl-3-aminoprophyl)-trimethoxysilane (DIAMO),N-(2-aminoethyl-3-aminoprophyl)-triethoxysilane,N-(2-aminoethyl-3-aminoprophyl)-tripropoxysilane,N-(2-aminoethyl-3-aminoprophyl)-tributoxysilane,trimethoxysilylpropyldiethylenetriamine (TRIAMO),triethoxysilylpropyldiethylenetriamine,tripropoxysilylpropyldiethylenetriamine,tributoxysilylpropyldiethylenetriamine, 2-glycydoxyethylmethoxysilane,3-glycydoxyprophyltrimethoxysilane, 3-glycydoxyprophyltriethoxysilane,2-glycydoxyprophyltrimethoxysilane, 2-glycydoxyprophyltriethoxysilane,2-glycydoxyethylmethyldimethoxysilane,2-glycydoxyethylmethyldiethoxysilane,3-glycydoxyethylmethyldimethoxysilane,3-glycydoxypropylethyldimethoxysilane,3-glycydoxyprophylethyldimethoxysilane,3-glycydoxyprophylethyldiethoxysilane,2-glycydoxyprophylethyldiethoxysilane,2-glycydoxyprophylethyldimethoxysilane,2-(3,4-ethoxycyclohexyl)ethyltrimethoxysilane,2-(3,4-ethoxycyclohexyl)ethyltriethoxysilane, ethyltrimethoxysilane,methyltriethoxysilane, 3-chloroprophyltrimethoxysilane,3-chioroprophyltrimpropoxysilane, 2-chloroprophyltributoxysilane,phenyltrimethoxysilane, phenyltriethoxysilane,3,3,3-trifluoroprophyltrimethoxysilane, dimethyldimethoxysilane,3-chloroprophylmethyldimethoxysilane, methyltrichlorosilane,ethyltrichlorosilane, phenyltrichlorosilane, vinyltrichlorosilane,hexyltrichlorosilane or decyltrichlorosilane. The aforementioned GeneralFormulas 1 to 3 have also been described in Korean Patent ApplicationNo. 10-2004-0033965, so detailed description thereof will be omitted.

In order to retain transparency of a colorless composite material (or atransparent substrate) within a wide temperature range by adjusting athermooptic coefficient of inorganic-organic hybrid resin contained inthe colorless composite material according to an exemplary embodiment ofthe present disclosure, a ratio of inorganic bonds (for example, Si—O—Sibonds) to organic bonds within the inorganic-organic hybrid resin may beadjusted such that the thermooptic coefficient of the inorganic-organichybrid resin (i.e., inorganic-organic hybrid resin with a lowthermooptic coefficient) can be adjusted into −5×10 ⁻⁵/° C.˜+10⁻⁵/° C.

The inorganic-organic hybrid resin may have a variable thermoopticcoefficient according to ratios and/or types of inorganic and organicmaterials. The thermooptic coefficient of the inorganic-organic hybridresin may thus be decided by combination of the thermooptic coefficientof each bond.

Therefore, in order to make the thermooptic coefficient of theinorganic-organic hybrid resin close to the thermooptic coefficient ofglass fiber consisting of inorganic materials, it may be necessary toincrease the ratio of the inorganic materials (i.e., inorganic bonds)within the inorganic-organic hybrid resin.

A difference of refractive index in response to a temperature change maybe reduced as the thermooptic coefficients of the inorganic-organichybrid resin and the glass fibers are closer (more similar) to eachother. This may allow for use of the colorless composite material withina wide temperature range.

In order to adjust the thermooptic coefficient of the inorganic-organichybrid resin into −5×10⁻⁵/° C.˜+10⁻⁵/° C., if it is assumed that theinorganic-organic hybrid resin is 100% by weight, the inorganic bonds(for example, Si—O—Si bonds) within the inorganic-organic hybrid resinmay be over 30% by weight or in a ratio of 40% to 60% by weight. Here,the organic bonds within the inorganic-organic hybrid resin may be below70% by weight or in a ratio of 60% to 40% by weight. The organic bondmay be a bond such as methyl (—CH3), ethyl (—C2H5), phenyl (—C6H5) andthe like.

Hereinafter, description will be given of a method for manufacturing acolorless composite material in accordance with a first exemplaryembodiment.

FIG. 1 is a flowchart illustrating a method for manufacturing acolorless composite material in accordance with a first exemplaryembodiment.

First, surfaces of glass fibers (glass fabrics) may be processed througha typical surface processing (S11). For example, the surfaces of theglass fibers (glass fabrics) may be processed to impregnate the glassfibers with inorganic-organic hybrid resin.

The inorganic-organic hybrid resin may be manufactured through a sol-gelmethod (S12). The inorganic-organic hybrid resin may be manufactured bya sol-gel method including a hydrolysis process and a condensationreaction, by reacting organic hallogensilane with silicon alkoxide oralkylether, or by a non-hydrolytic reaction without using water.

A ratio of Si—O—Si bonds within the inorganic-organic hybrid resin maybe adjusted after the inorganic-organic hybrid resin is manufacturedbased on one of General Formulas 1 to 3 as aforementioned, or adjustedwhen the inorganic-organic hybrid resin is manufactured based on one ofGeneral Formulas 1 to 3. For example, the inorganic-organic hybrid resinmay be expressed by General Formula 1, and the ratio of the inorganicbonds/organic bonds may be adjusted by changing R² or n and m. Or, theinorganic-organic hybrid resin may be manufactured by synthesizingSi—O—Si bonds over 30% by weight or in a ratio of 40 to 60% by weightwith the organic bonds.

The surface-processed glass fibers may be impregnated with theinorganic-organic hybrid resin (S13).

The colorless composite material may be manufactured by performing heatcuring or UV curing for the impregnated materials (S14). The impregnatedmaterials may be prepregged in one direction, the prepregged layers maybe deposited (laminated), and the deposited layers may be compressedwith applying heat, thereby manufacturing the colorless compositematerial.

FIG. 2 is a view illustrating experimental results in accordance withexemplary embodiments.

As illustrated in FIG. 2, in order to adjust the thermooptic coefficientof the inorganic-organic hybrid resin into −5×10⁻⁵/° C.˜+10⁻⁵/° C., ifit is assumed that the inorganic-organic hybrid resin is 100% by weight,the inorganic bonds (for example, Si—O—Si bonds) within theinorganic-organic hybrid resin may be adjusted to be over 30% by weightor in a ratio of 40% to 60% by weight. This may allow for manufacturinga colorless composite material which maintains optical transmittanceover 75% and haze less than 15% within a wide temperature range between−10° C. and 80° C.

Therefore, in accordance with the colorless composite material and themanufacturing method thereof according to the first exemplaryembodiment, the transparency of the colorless composite material (or atransparent substrate) may be retained within the wide temperature rangeby adjusting the ratio of the inorganic bonds (for example, Si—O—Sibonds) within the inorganic-organic hybrid resin contained in thecolorless composite material.

Meanwhile, in order to adjust the thermooptic coefficient of theinorganic-organic hybrid resin into −5×10⁻⁵/° C.˜+10⁻⁵/° C., theinorganic bonds within the inorganic-organic hybrid resin may bemanufactured using a metallic element. Hereinafter, description will begiven of a method for manufacturing a colorless composite material usinginorganic bonds containing a metallic element with reference to FIG. 3.

Hereinafter, a method for manufacturing a colorless composite materialin accordance with a second exemplary embodiment will be described withreference to FIG. 3.

FIG. 3 is a flowchart showing a method for manufacturing a colorlesscomposite material in accordance with a second exemplary embodiment.

First, surfaces of glass fibers (glass fabrics) may be processed througha typical surface processing (S21). For example, the surfaces of theglass fibers (glass fabrics) may be processed to impregnate the glassfibers with inorganic-organic hybrid resin.

The inorganic-organic hybrid resin containing the metallic element maybe manufactured by a sol-gel method (S22). The inorganic-organic hybridresin may be manufactured by a sol-gel method including a hydrolysisprocess and a condensation reaction, by reacting organic hallogensilanewith silicon alkoxide or alkylether, or by a non-hydrolytic reactionwithout using water.

A ratio of inorganic bonds (for example, Si—O-M bonds or M-O-M bonds)within the inorganic-organic hybrid resin may be adjusted after theinorganic-organic hybrid resin is manufactured based on one of GeneralFormulas 1 to 3 as aforementioned, or adjusted when theinorganic-organic hybrid resin is manufactured based on one of GeneralFormulas 1 to 3. The inorganic-organic hybrid resin may be expressed byGeneral Formula 1, and the ratio of the inorganic bonds/organic bondsmay be adjusted by changing R² or n and m. Or, the inorganic-organichybrid resin may be manufactured by synthesizing the inorganic bondsover 2% by weight or in a ratio of 2% to 20% by weight with the organicbonds.

In order to adjust the thermooptic coefficient of the inorganic-organichybrid resin into −5×10⁻⁵/° C.˜+10⁻⁵/° C., if it is assumed that theinorganic-organic hybrid resin is 100% by weight, the inorganic bonds(for example, Si—O-M bonds or M-O-M bonds) within the inorganic-organichybrid resin may be adjusted into a ratio of 2% to 20% by weight. Here,the organic bonds within the inorganic-organic hybrid resin may be in aratio of 98% to 80% by weight. The organic bonds may be bonds such asmethyl (—CH3), ethyl (—C2H5), phenyl (—C6H5) and the like.

The inorganic bonds, namely, Si—O-M bonds or M-O-M bonds, may contain ametallic element M. For example, the metallic element may be one of Ti,Zr and Al, and the Si—O-M bonds or M-O-M bonds may be in a ratio of 2%to 20% by weight.

In order to adjust the thermooptic coefficient of the inorganic-organichybrid resin into −5×10⁻⁵/° C.˜+10⁻⁵/° C., the Si—O-M bonds or M-O-Mbonds may be one of Si—O—Ti, Si—O—Zr and Si—O—Al bonds. For example, theSi—O-M bond may be the Si—O—Ti bond and the Ti may be in a ratio of 2 to20% by weight. The Si—O-M bond may be the Si—O—Zr bond and the Zr may bein a ratio of 2 to 8% by weight. Also, the Si—O-M bond may be theSi—O—Al bond and the Al may be in a ratio of 2 to 10% by weight.

In order to adjust the thermooptic coefficient of the inorganic-organichybrid resin into −5×10⁻⁵/° C.˜+10 ⁻⁵/° C., the M-O-M bonds may merelybe consisting of metallic elements. For example, the M-O-M bond may beTi—O—Ti bond and the Ti may be in a ratio of 2 to 20% by weight. TheM-O-M bond may be Al—O—Al bond and the Al may be in a ratio of 2 to 10%by weight. Also, the M-O-M bond may be Zr—O—Zr bond and the Zr may be ina ratio of 2 to 8% by weight.

The surface-processed glass fibers may be impregnated with theinorganic-organic hybrid resin (S23).

The colorless composite material may be manufactured by performing heatcuring or UV curing for the impregnated materials (S24).

As illustrated in FIG. 2, in order to adjust the thermooptic coefficientof the inorganic-organic hybrid resin into −5×10⁻⁵/° C.˜+10⁻⁵/° C., ifit is assumed that the inorganic-organic hybrid resin is 100% by weight,the inorganic bonds (for example, M-O-M bonds) within theinorganic-organic hybrid resin may be adjusted into a ratio of 2% to 20%by weight. This may allow for manufacturing a colorless compositematerial which maintains an optical transmittance over 75% and haze lessthan 15% within a wide temperature range between −10° C. and 80° C.

Therefore, in accordance with the colorless composite material and themanufacturing method thereof according to the second exemplaryembodiment, transparency of the colorless composite material (or atransparent substrate) may be retained within the wide temperature rangeby adding the metallic element to the inorganic bonds (for example,Si—O-M bonds or M-O-M bonds) within the inorganic-organic hybrid resincontained in the colorless composite material.

As the present features may be embodied in several forms withoutdeparting from the characteristics thereof, it should also be understoodthat the above-described embodiments are not limited by any of thedetails of the foregoing description, unless otherwise specified, butrather should be construed broadly within its scope as defined in theappended claims, and therefore all changes and modifications that fallwithin the metes and bounds of the claims, or equivalents of such metesand bounds are therefore intended to be embraced by the appended claims.

INDUSTRIAL APPLICABILITY

As described above, in accordance with a colorless composite materialand a manufacturing method thereof according to exemplary embodiments,transparency of the colorless composite material (or a transparentsubstrate) may be retained within a wide temperature range by adjustinga ratio of inorganic bonds (Si—O—Si bonds) within inorganic-organichybrid resin contained in the colorless composite material.

Also, in accordance with a colorless composite material and amanufacturing method thereof according to exemplary embodiments,transparency of the colorless composite material (or a transparentsubstrate) may be retained within a wide temperature range by adding ametallic element M to inorganic bonds (Si—O-M bonds or M-O-M bonds)within inorganic-organic hybrid resin contained in the colorlesscomposite material.

1. A colorless composite material comprising: glass fibers; andinorganic-organic hybrid resin consisting of inorganic bonds and organicbonds, wherein the inorganic bonds are Si—O—Si bonds or Si—O-M bonds,and M denotes a metallic element.
 2. The material of claim 1, whereinthe Si—O—Si bonds are in a ratio of 30% to 60% by weight.
 3. Thematerial of claim 1, wherein a thermooptic coefficient of theinorganic-organic hybrid resin is −5×10⁻⁵/° C.˜+10⁻⁵/° C.
 4. Thematerial of claim 1, wherein the Si—O-M bonds are in a ratio of 2% to20% by weight.
 5. The material of claim 4, wherein the metallic elementis one of Ti, Zr and Al.
 6. The material of claim 1, wherein the Si—O-Mbond is one of Si—O—Ti, Si—O—Zr and Si—O—Al bonds.
 7. The material ofclaim 6, wherein the Si—O-M bond is the Si—O—Ti bond and the Ti is in aratio of 2% to 20% by weight.
 8. The material of claim 6, wherein theSi—O-M bond is the Si—O—Zr bond and the Zr is in a ratio of 2% to 8% byweight.
 9. The material of claim 6, wherein the Si—O-M bond is theSi—O—Al bond and the Al is in a ratio of 2% to 10% by weight.
 10. Acolorless composite material comprising: glass fibers; andinorganic-organic hybrid resin consisting of inorganic bonds and organicbonds, wherein the inorganic bonds are M-O-M bonds and M denotes ametallic element.
 11. The material of claim 10, wherein the M-O-M bondis Ti—O—Ti bond and the Ti is in a ratio of 2% to 20% by weight.
 12. Thematerial of claim 10, wherein the M-O-M bond is Al—O—Al bond and the Alis in a ratio of 2% to 10% by weight.
 13. The material of claim 10,wherein the M-O-M bond is Zr—O—Zr bond and the Zr is in a ratio of 2% to8% by weight.
 14. A method for manufacturing a colorless compositematerial comprising: manufacturing inorganic-organic hybrid resinconsisting of inorganic bonds and organic bonds; impregnating the glassfibers with the inorganic-organic hybrid resin; and manufacturing acolorless composite material by performing heat curing or UV curing forthe impregnated materials, wherein the inorganic bonds are Si—O—Si bondsor Si—O-M bonds and M denotes a metallic element.
 15. The method ofclaim 14, wherein the Si—O—Si bonds are in a ratio of 30% to 60% byweight.
 16. The method of claim 14, wherein a thermooptic coefficient ofthe inorganic-organic hybrid resin is −5×10⁻⁵/° C.˜+10⁻⁵/° C.
 17. Themethod of claim 14, wherein the Si—O-M bonds are in a ratio of 2% to 20%by weight.
 18. The method of claim 17, wherein the metallic element isone of Ti, Zr and Al.
 19. The method of claim 14, wherein the Si—O-Mbond is one of Si—O—Ti, Si—O—Zr and Si—O—Al bonds.
 20. The method ofclaim 19, wherein the Si—O-M bond is the Si—O—Ti bond and the Ti is in aratio of 2% to 20% by weight.
 21. The method of claim 19, wherein theSi—O-M bond is the Si—O—Zr bond and the Zr is in a ratio of 2% to 8% byweight.
 22. The method of claim 19, wherein the Si—O-M bond is theSi—O—Al bond and the Al is in a ratio of 2% to 10% by weight.
 23. Amethod for manufacturing a colorless composite material comprising:manufacturing inorganic-organic hybrid resin consisting of inorganicbonds and organic bonds; impregnating the glass fibers with theinorganic-organic hybrid resin; and manufacturing a colorless compositematerial by performing heat curing or UV curing for the impregnatedmaterials, wherein the inorganic bonds are M-O-M bond and M denotes ametallic element.
 24. The method of claim 23, wherein the M-O-M bond isTi—O—Ti bond and the Ti is in a ratio of 2% to 20% by weight.
 25. Themethod of claim 23, wherein the M-O-M bond is Al—O—Al bond and the Al isin a ratio of 2% to 10% by weight.
 26. The method of claim 23, whereinthe M-O-M bond is Zr—O—Zr bond and the Zr is in a ratio of 2% to 8% byweight.